Microstructural Evolution during Mechanical Alloying and Hot Pressing of a Powder Blend of Aluminium and 316 Stainless Steel

Abstract:

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The paper examines the phase evolution in blends consisting of different proportions of
stainless steel (SS316) and Al (0, 25, 65 and 85 wt. %) powders during high-energy ball milling by
x-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and high-resolution
transmission electron microscopy. An attempt has also been made to study the mechanical property
of the bulk samples obtained by hot pressing the ball milled powder blend at suitable a temperature
and pressure. The results of microstructural changes and mechanical property and the ability of
consolidation of the amorphous/nanocrystalline powders by high-pressure techniques to develop
engineering components has been discussed and highlighted.